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The 1 piece is a SOLID round rubber seal. The 2 piece is 2 half's that are the same and they fit together.
From a practical standpoint, the differences are great enough that most of the parts are not interchangeable. Whichever block you go with, you'll need to get the correct parts for it.
What else can I help you with?
Chevy 350 rear main seal?
Yep, they have one. 1986 and older has a two piece rear main seal. 1987 and up has a one piece rear main seal.
How does an rear crankshaft oil seal operate?
The job of the rear main seal is to keep the oil lubricating the rear main bearing from leaking out. Older model rear main seals were made from a "rope" type of material. Today the rear main seal is a one or two piece seal made from neoprene rubber and is located directly behind the rearmost main bearing journal of the crankshaft.
How do you change rear main seal 6.0 turbo diesel?
pull trans. fly wheel one piece rear main seal not a job for a shade tree
How do i fix a rear main seal on a BMW 325is?
replace it with a new one
How do you replace a rear main oil seal on a 1996 Pontiac firebird3.8?
That engine has a solid round one piece rear main seal that slides over the rear of the crankshaft. You will either have to remove the engine are transmission to be able to replace the rear seal. No other way to do it. ( BIG JOB ) and a good paying job.
How do you replace a rear main seal?
remove the transmission pry the old seal out and install the new one. piece of cake
Where is the crankshaft seal on 1988 dodge caravan?
There is one on each end of the crankshaft. The front main seal is at the pulley and, while the rear main is at the transmission end.
What is the difference between 1975 350 block to a 1990 350 block?
The 1990 block would have the integrated one-piece rear main seal. Oil pan and crankshaft are not interchangeable.
What year did chevy 350 start using a one piece rear main seal?
1986
Is the rear main seal on a 2001 4.2 ford f150 one or two piece?
Two
Is the main rear seal on a 1982 Chevy chyennee 350 one or two piece?
two
Does a 350 with casting no 3970010 have a one piece rear main?
Yes, a 350 engine with casting number 3970010 typically features a one-piece rear main seal. This casting number corresponds to a later model small-block Chevy engine produced from 1986 to 1995, during which time the transition to a one-piece rear main seal design was implemented. If you're working on this engine, you can expect it to have the one-piece seal configuration.
